WO1999007691A2 - Verfahren zur herstellung von l-ascorbinsäure - Google Patents
Verfahren zur herstellung von l-ascorbinsäure Download PDFInfo
- Publication number
- WO1999007691A2 WO1999007691A2 PCT/EP1998/004649 EP9804649W WO9907691A2 WO 1999007691 A2 WO1999007691 A2 WO 1999007691A2 EP 9804649 W EP9804649 W EP 9804649W WO 9907691 A2 WO9907691 A2 WO 9907691A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- acid
- keto
- gulonic
- ascorbic acid
- reaction
- Prior art date
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D307/00—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom
- C07D307/02—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings
- C07D307/34—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members
- C07D307/56—Heterocyclic compounds containing five-membered rings having one oxygen atom as the only ring hetero atom not condensed with other rings having two or three double bonds between ring members or between ring members and non-ring members with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to ring carbon atoms
- C07D307/62—Three oxygen atoms, e.g. ascorbic acid
Definitions
- the invention relates to a process for the preparation of L-ascorbic acid by reacting 2-keto-L-gulonic acid with concentrated mineral acid at temperatures between 40 and 80 ° C.
- the invention relates in particular to a process for the preparation of L-ascorbic acid, characterized in that the reaction is carried out at temperatures between 50 and 70 ° C.
- the novel process according to the invention makes it possible to obtain L-ascorbic acid in high yields by lactonizing 2-keto-L-gulonic acid with concentrated mineral acid.
- Another advantage is the associated lower energy consumption and thus a lower environmental impact.
- the process according to the invention proves to be advantageous if the 2-keto-L-gulonic acid and the hydrochloric acid are used in a ratio of 1: 3.
- the invention thus also relates to a process in which the 2-keto-L-gulonic acid and the mineral acid are used in a ratio of 1: 3.
- concentration can be varied over a wide range. Both a more concentrated and a more dilute driving style can be carried out.
- the weight ratio of 2-keto-L-gulonic acid / concentrated mineral acid can be, for example, between 10: 1 and 1:10.
- the loading is particularly preferred. rich between 1: 2 and 1: 4, a ratio of 1: 3 is particularly advantageous.
- Mineral acid means e.g. Hydrochloric acid, phosphoric acid or sulfuric acid.
- the concentrated mineral acids are preferably used.
- the invention also relates to a process as described, characterized in that concentrated hydrochloric acid is used as the mineral acid.
- the invention also relates to a process as described, characterized in that a mixture consisting of 2-keto-L-gulonic acid and concentrated mineral acid is heated to the desired reaction temperature.
- the reaction time is usually between 1 and 5 hours, in particular between 2 and 4 hours, a reaction time of approximately 3 hours is particularly preferred.
- the processing takes place according to known methods, e.g. through activated carbon treatment, filtration, removal of the solvent and crystallization.
- the yields of L-ascorbic acid are generally over 90%, so that complex cleaning steps can be dispensed with. All temperatures above and below are given in ° C. example 1
Abstract
Description
Claims
Priority Applications (6)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP98943779A EP1001952A2 (de) | 1997-08-07 | 1998-07-24 | Verfahren zur herstellung von l-ascorbinsäure |
JP2000506195A JP2001512722A (ja) | 1997-08-07 | 1998-07-24 | L−アスコルビン酸の製造方法 |
KR1020007001187A KR20010022595A (ko) | 1997-08-07 | 1998-07-24 | 엘-아스코브산의 제조 방법 |
AU91562/98A AU9156298A (en) | 1997-08-07 | 1998-07-24 | Process for preparing l-ascorbic acid |
BR9811855-2A BR9811855A (pt) | 1997-08-07 | 1998-07-24 | Processo para preparação de ácido l-ascórbico |
CA002299364A CA2299364A1 (en) | 1997-08-07 | 1998-07-24 | Process for the preparation of l-ascorbic acid |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19734086.5 | 1997-08-07 | ||
DE19734086A DE19734086C1 (de) | 1997-08-07 | 1997-08-07 | Verfahren zur Herstellung von L-Ascorbinsäure |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999007691A2 true WO1999007691A2 (de) | 1999-02-18 |
WO1999007691A3 WO1999007691A3 (de) | 1999-04-08 |
Family
ID=7838185
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP1998/004649 WO1999007691A2 (de) | 1997-08-07 | 1998-07-24 | Verfahren zur herstellung von l-ascorbinsäure |
Country Status (12)
Country | Link |
---|---|
EP (1) | EP1001952A2 (de) |
JP (1) | JP2001512722A (de) |
KR (1) | KR20010022595A (de) |
CN (1) | CN1265655A (de) |
AR (1) | AR010938A1 (de) |
AU (1) | AU9156298A (de) |
BR (1) | BR9811855A (de) |
CA (1) | CA2299364A1 (de) |
CO (1) | CO4770883A1 (de) |
DE (1) | DE19734086C1 (de) |
ID (1) | ID25547A (de) |
WO (1) | WO1999007691A2 (de) |
Cited By (8)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6197977B1 (en) | 1999-04-28 | 2001-03-06 | Basf Aktiengesellschaft | Process for the preparation of L-ascorbic acid |
US6274744B1 (en) | 1999-11-12 | 2001-08-14 | Basf Aktiengesellschaft | Preparation of alkali metal salts of L-ascorbic acid |
WO2001085711A1 (de) * | 2000-05-10 | 2001-11-15 | Basf Aktiengesellschaft | Verfahren zur herstellung von l-ascorbinsäure durch lactonisierung von 2-keto-l-gulonsäure oder 2-keto-l-gulonsäureestern |
US6610863B2 (en) | 2000-12-22 | 2003-08-26 | Eastman Chemical Company | Continuous process for producing L-ascorbic acid |
EP1377594A2 (de) * | 2001-04-10 | 2004-01-07 | Danisco USA, Inc. | Polymerisierung von mono- und disacchariden mit monocarbonsäuren und lactonen |
US6716997B1 (en) | 2001-10-09 | 2004-04-06 | Eastman Chemical Company | Systems and methods for generation of ascorbic acid with reduced color |
US6740762B2 (en) | 2001-08-24 | 2004-05-25 | Eastman Chemical Company | Process for ascorbic acids using alkaline earth silicate catalysts |
US6864376B2 (en) | 2000-12-22 | 2005-03-08 | Eastman Chemical Company | Process for producing ascorbic acid |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19904821C1 (de) * | 1999-02-05 | 2000-07-06 | Merck Patent Gmbh | Verfahren zur Herstellung von L-Ascobinsäure |
CN111018815A (zh) * | 2019-12-29 | 2020-04-17 | 安徽丰原发酵技术工程研究有限公司 | 一种通过溶剂萃取提高盐酸浓度制备维生素c的方法 |
CN111087373A (zh) * | 2019-12-29 | 2020-05-01 | 安徽丰原发酵技术工程研究有限公司 | 一种酸法制备维生素c的方法 |
CN114369075B (zh) * | 2022-02-14 | 2023-09-29 | 河北乐开节能科技股份有限公司 | 利用2-酮基-l-古龙酸的水溶液一步制备vc结晶的方法 |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462251A (en) * | 1945-05-16 | 1949-02-22 | Merck & Co Inc | Process for preparing ascorbic acids |
DE2939052A1 (de) * | 1978-10-31 | 1980-05-14 | Jenapharm Veb | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
WO1987000839A1 (en) * | 1985-08-09 | 1987-02-12 | The Lubrizol Corporation | Production of l-ascorbic acid from 2-keto-l-gulonic acid |
GB2205567A (en) * | 1987-06-08 | 1988-12-14 | Takeda Chemical Industries Ltd | Process for preparing L-ascorbic acid |
-
1997
- 1997-08-07 DE DE19734086A patent/DE19734086C1/de not_active Expired - Fee Related
-
1998
- 1998-07-24 JP JP2000506195A patent/JP2001512722A/ja active Pending
- 1998-07-24 AU AU91562/98A patent/AU9156298A/en not_active Abandoned
- 1998-07-24 BR BR9811855-2A patent/BR9811855A/pt not_active Application Discontinuation
- 1998-07-24 WO PCT/EP1998/004649 patent/WO1999007691A2/de not_active Application Discontinuation
- 1998-07-24 CN CN98807955A patent/CN1265655A/zh active Pending
- 1998-07-24 KR KR1020007001187A patent/KR20010022595A/ko not_active Application Discontinuation
- 1998-07-24 ID IDW20000174A patent/ID25547A/id unknown
- 1998-07-24 CA CA002299364A patent/CA2299364A1/en not_active Abandoned
- 1998-07-24 EP EP98943779A patent/EP1001952A2/de not_active Withdrawn
- 1998-08-06 CO CO98045322A patent/CO4770883A1/es unknown
- 1998-08-07 AR ARP980103913A patent/AR010938A1/es unknown
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2462251A (en) * | 1945-05-16 | 1949-02-22 | Merck & Co Inc | Process for preparing ascorbic acids |
DE2939052A1 (de) * | 1978-10-31 | 1980-05-14 | Jenapharm Veb | Verfahren und vorrichtung zur herstellung von l-ascorbinsaeure |
WO1987000839A1 (en) * | 1985-08-09 | 1987-02-12 | The Lubrizol Corporation | Production of l-ascorbic acid from 2-keto-l-gulonic acid |
GB2205567A (en) * | 1987-06-08 | 1988-12-14 | Takeda Chemical Industries Ltd | Process for preparing L-ascorbic acid |
Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6197977B1 (en) | 1999-04-28 | 2001-03-06 | Basf Aktiengesellschaft | Process for the preparation of L-ascorbic acid |
US6274744B1 (en) | 1999-11-12 | 2001-08-14 | Basf Aktiengesellschaft | Preparation of alkali metal salts of L-ascorbic acid |
WO2001085711A1 (de) * | 2000-05-10 | 2001-11-15 | Basf Aktiengesellschaft | Verfahren zur herstellung von l-ascorbinsäure durch lactonisierung von 2-keto-l-gulonsäure oder 2-keto-l-gulonsäureestern |
US6617463B2 (en) | 2000-05-10 | 2003-09-09 | Basf Aktiengesellschaft | Method for the production of L-ascorbic acid by lactonization of 2-keto-L-gulonic acid or s2-keto-L-gulonate esters |
US6610863B2 (en) | 2000-12-22 | 2003-08-26 | Eastman Chemical Company | Continuous process for producing L-ascorbic acid |
US6864376B2 (en) | 2000-12-22 | 2005-03-08 | Eastman Chemical Company | Process for producing ascorbic acid |
EP1377594A2 (de) * | 2001-04-10 | 2004-01-07 | Danisco USA, Inc. | Polymerisierung von mono- und disacchariden mit monocarbonsäuren und lactonen |
EP1377594A4 (de) * | 2001-04-10 | 2004-06-30 | Danisco Usa Inc | Polymerisierung von mono- und disacchariden mit monocarbonsäuren und lactonen |
US6740762B2 (en) | 2001-08-24 | 2004-05-25 | Eastman Chemical Company | Process for ascorbic acids using alkaline earth silicate catalysts |
US6716997B1 (en) | 2001-10-09 | 2004-04-06 | Eastman Chemical Company | Systems and methods for generation of ascorbic acid with reduced color |
Also Published As
Publication number | Publication date |
---|---|
BR9811855A (pt) | 2000-08-15 |
CN1265655A (zh) | 2000-09-06 |
CO4770883A1 (es) | 1999-04-30 |
EP1001952A2 (de) | 2000-05-24 |
KR20010022595A (ko) | 2001-03-26 |
CA2299364A1 (en) | 1999-02-18 |
JP2001512722A (ja) | 2001-08-28 |
DE19734086C1 (de) | 1998-08-13 |
AR010938A1 (es) | 2000-07-12 |
AU9156298A (en) | 1999-03-01 |
WO1999007691A3 (de) | 1999-04-08 |
ID25547A (id) | 2000-10-12 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO1999007691A2 (de) | Verfahren zur herstellung von l-ascorbinsäure | |
DE19547073C1 (de) | Verfahren zur Herstellung von Ascorbinsäure | |
EP0045076A1 (de) | Verfahren zur Herstellung von 1,4:3,6-Dianhydro-D-glucit-5-nitrat (Isosorbid-5-nitrat) | |
EP0376122A1 (de) | Verfahren zur Herstellung von Caprolactam | |
DE3936244A1 (de) | Verfahren zur herstellung von n-phosphonomethyl-glycin | |
DE3222780C2 (de) | ||
DE69822222T2 (de) | Verfahren zur herstellung von beta-hydroxy-gamma-butyrolacton-derivaten und beta-(meth)acryloxy-gamma-butyrolacton-derivaten | |
WO2000046216A1 (de) | Verfahren zur herstellung von l-ascorbinsäure | |
DE2410310C3 (de) | Verfahren zur Reinigung von 1-Aminoanthrachinon | |
EP0252363B1 (de) | 4-Benzyloxy-3-pyrrolin-2-on, dessen Herstellung und Verwendung zur Synthese von Tetramsäure | |
DE60103565T2 (de) | Verfahren zur herstellung von 2-methoxy-4-methyl-6-methylamino-1,3,5-triazin | |
DE2507576A1 (de) | Verfahren zur herstellung eines n-substituierten pyrrolidons | |
DE19530124C2 (de) | Verfahren zur Herstellung von N-Allyl-2,5-dimethyl-piperidinol-4-benzoylester | |
DE2833967A1 (de) | Verfahren zur herstellung von apovincamin | |
EP0363489A1 (de) | Verfahren zur herstellung von 4-phenyl-2-pyrrolidon-1-essigsäure amid | |
DE64073C (de) | Verfahren zur Darstellung von Dioxyfettsäuren | |
DE2931776C2 (de) | Verfahren zur Abtrennung von Citronensäure aus einem Gemisch mit Oxalsäure | |
DE19726511A1 (de) | Verfahren zur Herstellung von Aldonsäure- oder Aldobionsäureamiden | |
MXPA00001339A (en) | Process for preparing l-ascorbic acid | |
EP0011773A2 (de) | Verfahren zur Herstellung von Amidosulfonsäuren | |
DE3431009A1 (de) | Verfahren zur herstellung von 6-demethyl-6-desoxy-6-methylen-5-oxytetracyclin und dessen 11a-chlorderivat | |
EP0718305A1 (de) | Verfahren zur Herstellung von Aldobionsäureamid | |
DE3230333A1 (de) | Verfahren zur herstellung von threo-1-phenyl-2-amino-propanol-(1)-derivaten | |
DE2635986B2 (de) | Verfahren zur Herstellung von a -Aminobenzylpenicillin | |
EP0094560A1 (de) | Verfahren zur Herstellung von 3-(10,11-Dihydro-5H-dibenzo /a,d/-cyclohepten-5-yliden)-N,N-dimethyl-1-propanamin-N-oxid-Dihydrat |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
WWE | Wipo information: entry into national phase |
Ref document number: 98807955.0 Country of ref document: CN |
|
AK | Designated states |
Kind code of ref document: A2 Designated state(s): AL AM AT AU AZ BA BB BG BR BY CA CH CN CU CZ DE DK EE ES FI GB GE GH HU ID IL IS JP KE KG KP KR KZ LC LK LR LS LT LU LV MD MG MK MN MW MX NO NZ PL PT RO RU SD SE SG SI SK SL TJ TM TR TT UA UG US UZ VN YU ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A2 Designated state(s): GH GM KE LS MW SD SZ UG ZW AM AZ BY KG KZ MD RU TJ TM AT BE CH CY DE DK ES FI FR GB GR IE IT LU MC NL PT SE BF BJ CF CG CI CM GA GN GW ML MR NE SN TD TG |
|
DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 1998943779 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 1020007001187 Country of ref document: KR |
|
ENP | Entry into the national phase |
Ref document number: 2299364 Country of ref document: CA Ref document number: 2299364 Country of ref document: CA Kind code of ref document: A |
|
WWE | Wipo information: entry into national phase |
Ref document number: PA/a/2000/001339 Country of ref document: MX |
|
WWP | Wipo information: published in national office |
Ref document number: 1998943779 Country of ref document: EP |
|
WWE | Wipo information: entry into national phase |
Ref document number: 09463669 Country of ref document: US |
|
REG | Reference to national code |
Ref country code: DE Ref legal event code: 8642 |
|
WWP | Wipo information: published in national office |
Ref document number: 1020007001187 Country of ref document: KR |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1998943779 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 1020007001187 Country of ref document: KR |